Modify comments

Author: 16yuki0702

src/mod/use.md

@@ -44,10 +44,11 @@ fn main() {
         // This is equivalent to `use deeply::nested::function as function`.
         // This `function()` will shadow the outer one.
         use crate::deeply::nested::function;
-        function();
 
         // `use` bindings have a local scope. In this case, the
         // shadowing of `function()` is only in this block.
+        function();
+
         println!("Leaving block");
     }